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Home Forums RORB – general use Catchment slope in RORB

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  • #2559

    ThaneshGaneson
    Participant

    I was building a RORB model for a natural catchment that has parts that are hilly and other areas which are generally flat.

    How does RORB differentiate between a catchment that has a higher average slope than another one that is flatter?

    If two natural sub-catchments have the same area but one was hilly and one was flat, I would expect a higher rate of runoff from the hilly sub-catchment. But since RORB does not accept catchment slope as an input, would RORB think these are essentially the same when performing calculations?

    Thanks

    #2560

    FCRDSru
    Participant

    RORB does take account of slope in some situations via the specification of reaches Have a look in the RORB manual section 2.2.3 and Table 2-2. Reach types 2 and 3 include slope as a parameter.

    If you think that slope influences the relationship between storage and discharge for a particular catchment, then you could change the kc routing parameter.

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